//
//  UIColor+HexString.m
//  Shark
//
//  Created by Connect King on 11-11-15.
//  Copyright 2011年 alpha. All rights reserved.
//

#import "UIColor+HexString.h"

@implementation UIColor (HexString)

+ (UIColor *) colorWithHexString:(NSString *)stringToConvert {
    NSString * cString = [[stringToConvert stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];

    // String should be 6 or 8 characters
    if ([cString length] < 6) return [UIColor blackColor];

    // strip 0X if it appears
    if ([cString hasPrefix:@"0X"]) cString = [cString substringFromIndex:2];
    if ([cString hasPrefix:@"#"]) cString = [cString substringFromIndex:1];

    if ([cString length] != 6) return [UIColor blackColor];

    // Separate into r, g, b substrings
    NSRange range;
    range.location = 0;
    range.length = 2;
    NSString * rString = [cString substringWithRange:range];

    range.location = 2;
    NSString * gString = [cString substringWithRange:range];

    range.location = 4;
    NSString * bString = [cString substringWithRange:range];

    // Scan values
    unsigned int r, g, b;
    [[NSScanner scannerWithString:rString] scanHexInt:&r];
    [[NSScanner scannerWithString:gString] scanHexInt:&g];
    [[NSScanner scannerWithString:bString] scanHexInt:&b];

    return [UIColor colorWithRed:((float)r / 255.0f)
            green:((float)g / 255.0f)
            blue:((float)b / 255.0f)
            alpha:1.0f];
} /* colorWithHexString */

@end
